ACCA MA Common Mistakes & Examiner Insights
MA is evenly split between calculation and narrative, and candidates consistently do worse on the calculations. Most lost marks come from misreading the requirement or applying a technique slightly wrong — not from not knowing it. These are the recurring traps.
1. Read whether it wants cost per unit or total cost
The single most common MA error. The question asks for cost per unit; the candidate computes total cost (or the reverse). Always check the units the requirement asks for before you start, and again before you enter your answer.
2. Number-entry questions need the exact figure
These are a known weak spot. Enter the number in the format asked for — strip currency symbols and commas unless told otherwise, and watch rounding. A correct method with the wrong format still scores zero.
3. NPV, IRR and payback each answer a different question
Candidates muddle the three. NPV is an absolute money figure; IRR is a percentage return; payback is a time. Use the one the requirement names, and for IRR don't fall for the interpolation sign error when one NPV is negative.
4. Get favourable vs adverse the right way round
A variance calculated correctly but labelled the wrong way loses the mark. Check the direction: did the actual cost exceed standard (adverse) or come in under (favourable)? State it explicitly.
5. Watch stepped and semi-variable costs
Stepped fixed costs and semi-variable costs are deliberate distractor territory. Don't treat a stepped cost as fully variable, and split semi-variable costs (often with high-low) before using them.
6. Standard cost variances: use the right basis
Material price is on quantity purchased; usage is on quantity used for actual output. Labour rate is on hours paid; efficiency on hours worked. Using the wrong quantity is a classic slip.
7. Annual vs monthly — match the period
Many errors come from mixing an annual figure with a monthly one (or a per-order cost with annual demand). Keep every figure on the same time basis throughout the calculation.
8. Know the four value types
Value analysis — exchange, use, esteem and cost value — is regularly examined. Be able to distinguish them; they're not interchangeable.
Practise these in context: every MA question on GoQualified is mapped to the syllabus with a full worked explanation, so you can see exactly where the marks are. Switch to Exam Sim mode for a timed MA mock exam under real exam conditions. Free, no login.